Effective degradation of Orange G and Rhodamine B by alkali-activated hydrogen peroxide: roles of HO2− and O2·−

Heterogeneous Fenton-like activity of novel metallosalophen magnetic nanocomposites: significant anchoring group effect

“…Also, when we have used isopropanol as an effective hydroxyl radical scavenger, the degradation rate of dye gets reduced to 45% in the presence of the catalyst and H 2 O 2 providing a strong evidence for involvement of hydroxyl radicals in degradation process. 40 According to these experiments, Fe(III) is reduced to Fe(II) in the presence of H 2 O 2 followed by reaction with H 2 O 2 to produce Fe(III) and hydroxyl radicals i.e. a classic Fenton reaction.…”

“…The contribution of O 2 c À to the degradation of RhB was conrmed by addition of p-benzoquinone leading to a 40% decrease in decoloration rate. 40 The involvement of oxo species Fe(V) or Fe(IV) cation radical as well-known active species in peroxidaselike catalysis mediated by salen and porphyrin metal complexes in the presence of H 2 O 2 may be a suggestion. 29,32 Delayed reactions at lower temperatures in this work (Fig.…”

Hazardous wastes treatment technologies

“…The Cu ions leached during wastewater treatment was recycled by alkaline H 2 O 2 reaction. Wang, Zou, et al (2019) studied the removal of azo dye, Orange G (OG), and triphenylmethane dye, Rhodamine B (RhB), from wastewater using alkali-activated H 2 O 2 process. The results showed that alkali-H 2 O 2 effectively degraded both OG and RhB.…”

Physico‐chemical processes

“…It was found that 30%-100% pollutants were removed via mediators of DMBQ and GA in the redox cycle for T. versicolor. Wang, Zou, et al (2019) discovered alkali-activated H 2 O 2 AOP as an ideal process to treat alkaline dye wastewater. Orange G (OG) and RhB were tested as model pollutants.…”